CVE-2024-41468
📋 TL;DR
This CVE describes a command injection vulnerability in Tenda FH1201 routers that allows attackers to execute arbitrary commands on the device. The vulnerability exists in the /goform/exeCommand endpoint via the cmdinput parameter, affecting users running vulnerable firmware versions. Attackers can exploit this to gain full control of affected routers.
💻 Affected Systems
- Tenda FH1201
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the router allowing persistent backdoor installation, network traffic interception, credential theft, and lateral movement to connected devices.
Likely Case
Router takeover leading to DNS hijacking, credential harvesting, botnet recruitment, and denial of service to connected devices.
If Mitigated
Limited impact if network segmentation isolates the router and strict firewall rules prevent external access to the vulnerable endpoint.
🎯 Exploit Status
The vulnerability requires no authentication and has publicly available proof-of-concept code. Exploitation is straightforward with simple HTTP requests containing malicious commands.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: Yes
Instructions:
1. Check Tenda's official website for firmware updates. 2. Download the latest firmware for FH1201. 3. Access router admin interface. 4. Navigate to System Tools > Firmware Upgrade. 5. Upload and install the new firmware. 6. Reboot the router.
🔧 Temporary Workarounds
Disable Remote Management
allPrevent external access to the router's web interface
Access router admin > Advanced > System Tools > Remote Management > Disable
Firewall Block
linuxBlock access to the vulnerable endpoint using firewall rules
iptables -A INPUT -p tcp --dport 80 -m string --string "/goform/exeCommand" --algo bm -j DROP
iptables -A INPUT -p tcp --dport 443 -m string --string "/goform/exeCommand" --algo bm -j DROP
🧯 If You Can't Patch
- Isolate the router in a dedicated VLAN with strict firewall rules preventing all inbound traffic
- Implement network monitoring for suspicious requests to /goform/exeCommand endpoint
🔍 How to Verify
Check if Vulnerable:
Check firmware version in router admin interface under System Status or System Tools. If version is v1.2.0.14, the device is vulnerable.Check Version:
curl -s http://router-ip/goform/getStatus | grep version or check web interfaceVerify Fix Applied:
After updating firmware, verify the version has changed from v1.2.0.14 and test that requests to /goform/exeCommand no longer execute arbitrary commands.📡 Detection & Monitoring
Log Indicators:
- HTTP requests containing "/goform/exeCommand" with suspicious cmdinput parameters
- Unusual command execution in system logs
- Multiple failed login attempts followed by exeCommand access
Network Indicators:
- HTTP POST requests to /goform/exeCommand with shell metacharacters in parameters
- Unusual outbound connections from router to external IPs
- DNS queries to suspicious domains from router
SIEM Query:
source="router_logs" AND (url="/goform/exeCommand" OR cmdinput="*;*" OR cmdinput="*|*" OR cmdinput="*`*" OR cmdinput="*$(*")